Source SDK 2013

About

Source SDK 2013 is Valve's official released SDK containing the game code for Half-Life 2, Half-Life 2: Deathmatch, and Team Fortress 2, letting developers build and run mods for these games on Windows and Linux.

Getting started

Building requires cloning the repository and compiling it with Visual Studio on Windows, or via a container-based build process on Linux; the compiled mod can then be launched and debugged directly, or distributed through Steam using the Steam Runtime build.

Licensing & legal

• The SDK is licensed under Valve's non-commercial Source 1 SDK License.